<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      autocomplete="on"
      label-position="left"
    >
      <div style="margin: 0px auto 40px auto;" align="middle"><img src="../images/Nistlogo.png" width="120px"></div>
      <div class="title-container">
        <h3 class="title">南京公安研究院工单管理系统</h3>
      </div>
      <el-form-item prop="identity_type" error="">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-select
          ref="identity_type"
          v-model="loginForm.identity_type"
          placeholder="登录方式"
          name="identity_type"
          type="text"
          tabindex="1"
          autocomplete="on"
          clearable
        >
          <el-option v-for="item in identity_type" :key="item.key" :label="item.display_name" :value="item.key" />
        </el-select>
      </el-form-item>

      <el-form-item prop="identifier" error="">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.identifier"
          placeholder="用户名"
          name="identifier"
          type="text"
          tabindex="2"
          autocomplete="on"
          clearable
        />
      </el-form-item>

      <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
        <el-form-item prop="credential">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.credential"
            :type="passwordType"
            placeholder="密码"
            name="credential"
            tabindex="3"
            autocomplete="on"
            clearable
            @keyup.native="checkCapslock"
            @blur="capsTooltip = false"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
      </el-tooltip>

      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin"
      >登录
      </el-button>
    </el-form>

    <el-dialog title="Or connect with" :visible.sync="showDialog">
      Can not be simulated on local, so please combine you own business simulation! ! !
      <br>
      <br>
      <br>
      <social-sign />
    </el-dialog>
  </div>
</template>

<script>
// import { validUsername } from '@/utils/validate'

export default {
  name: 'Login',
  data() {
    const identity_type = [{
      key: 'username',
      display_name: '用户名登录'
    },
    {
      key: 'phone',
      display_name: '手机登录'
    },
    {
      key: 'mail',
      display_name: '邮箱登录'
    }
    ]

    const validateUsername = (rule, value, callback) => {
      if (value == null) {
        callback(new Error('请输入用户名！'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value == null) {
        callback(new Error('请输入密码！'))
      } else {
        callback()
      }
    }
    const validateIdentity = (rule, value, callback) => {
      if (value == null) {
        callback(new Error('请选择登录方式！'))
      } else {
        callback()
      }
    }
    return {
      identity_type,
      loginForm: {
        identifier: 'admin',
        credential: 'Nist@2018'
      },
      loginRules: {
        identifier: [{
          required: true,
          trigger: 'blur',
          validator: validateUsername
        }],
        credential: [{
          required: true,
          trigger: 'blur',
          validator: validatePassword
        }],
        identity_type: [{
          required: true,
          trigger: 'blur',
          validator: validateIdentity
        }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {}
    }
  },

  mounted() {
    if (this.loginForm.identifier === '') {
      this.$refs.identifier.focus()
    } else if (this.loginForm.credential === '') {
      this.$refs.credential.focus()
    }
  },

  methods: {
    checkCapslock(e) {
      const {
        key
      } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm)
            .then(() => {
              this.$router.push({
                path: this.redirect || '/',
                query: this.otherQuery
              })
              this.loading = false
            })
            .catch(() => {
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* 去掉el-select右侧箭头 */
.el-icon-arrow-up:before {
  content: '';
}

/* reset element-ui css */
.login-container {
  .el-select {
    height: 47px;
    width: 90%;
  }

  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
</style>
